I, the copyright holder of this work, hereby publish it under the following license: This file is licensed under the Creative Commons Attribution-Share...
بالایی یک اتاق و یا یک سازه گویند . در ساختمانهای یک طبقه سقف برای محافظت از نور آفتاب، برودت، باران و برف و در ساختمانهای چند طبقه علاوه بر این کار...
I, the copyright holder of this work, hereby publish it under the following license: This file is licensed under the Creative Commons Attribution-Share...
I, the copyright holder of this work, hereby publish it under the following license: This file is licensed under the Creative Commons Attribution-Share...
I, the copyright holder of this work, hereby publish it under the following license: This file is licensed under the Creative Commons Attribution-Share...
I, the copyright holder of this work, hereby publish it under the following license: This file is licensed under the Creative Commons Attribution-Share...
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